Particulate material dryer

Details Particulate material dryer Particulate material dryer

1998-08-07

1999-08-24

Bennett, Henry

Drying and gas or vapor contact with solids

Apparatus

Stationary receptacle or tube with agitator or conveyor

34174, F26B 1712

Patent

active

059409827

ABSTRACT:
A continuous flow particulate material dryer includes a base and a heating chamber extending upwards from a central location of the base for providing heated air to the dryer. A perforated inner wall structure extends upwardly from the base and surrounds the heating chamber. A perforated outer wall structure is spaced apart from the inner wall and extends upwardly from the base surrounding the inner wall. A main drying chamber is defined by the space between the inner and outer wall structures. A perforated partition separates the main drying chamber into an inner and an outer chamber. The partition restricts the flow of particulate material from the inner chamber and the outer chamber. An upward facing conical protrusion mounts above the heating chamber for dispersing the particulate matter evenly into both inner and outer chambers. A circular chamber having a rotatable auger therein is used to collect the particulate material from the base of the dryer. The auger includes ribbon flighting on an outermost portion for drawing particulate material from the outer chamber and full flighting on a remaining portion for drawing particulate material from the inner chamber. The full flighting draws the particulate material more quickly than the ribbon flighting, thus the particulate material flows through the inner chamber where the air is hotter at a faster rate than it flows through the outer chamber where the air is cooler to produce generally uniform drying.

REFERENCES:
patent: 4398356 (1983-08-01), Westelaken
patent: 4423557 (1984-01-01), Westelaken
patent: 4914834 (1990-04-01), Sime

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